Retired middleweight boxing champion Kelly Pavlik was charged with theft on Wednesday after stiffing a cab driver a $25 fare and after failing to appear in court on Friday, an arrest warrant has been issued, Breaking Celebrity News is reporting.

Pavlik was reportedly out drinking at Billy's Bar in his hometown of Youngstown, Ohio, when he called a cab to take him home around 3 a.m.

After failing to pay the taxi driver, the cabbie called 911 and reported the missing $25 fare to the Mahoning County Sheriff's Office. Pavlik reportedly got out of the cab and cursed at the driver saying, "I'm not paying. You go f**k yourself."

According to WKBN 27, Pavlik's attorney, Damian Billak, asked for a continuance until Tuesday because he's been unable to reach his client, but the request was denied.

The 31-year-old has battled alcohol abuse problems in the past and an insider exclusively tells Breaking Celebrity News he's been drinking heavily since his retirement in January.

"His drinking is out of control," the source said.

"I'll give him credit for not drinking and driving and taking a cab home from the bar, but the drinking is the root of his problems."

In January 2010 Pavlik spent 20 days at the Betty Ford Clinic and after relapsing, went back in Sept